Machine for sizing and polishing rings.



W. WHITE. MACHINE FOR SIZING AND POLISHING RINGS. APPLlcATloN HLED APR. 4. 191e.

l ,Q l vPatented Mar. 27, 1917.

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W. WHITE. MACHINE FOR SIZING AND POLISHING RINGS. APPLICATION FILED APR.4,1916.

:I: I Y2 Pnd Mar. 27, 1917.

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WALLACE WHITE, 0F LAVRENCE, MASSACHUSETTS.

MACHINE FOR SIZING AND POLI-SHING RINGS.

Specification of Letters latent.

patentes nar. er, reir.

Application filed April 4, 1916. Serial No. 88,782.

To alhwwm t may concern:

le it known that E, WALLACE WHITE, a citizen of the United States, residing at Lawrence, in the county of Essex and State of Massachusetts, have invented an lmprovement in Machines for Sizing and Polishing Rings, of which the following is a specification.

ln the manufacture of certain articles, a ring of circular formation is employed usually composed of copper or brass, which must be of very accurate dimensions, and have a smooth polished surface both inter* nally and externally. Such a ring may be made by taking a cast ring and rolling it by suitable rollerv dies adapted for engage ment with the ring both internally and eX- ternally, at opposite points, while the ring is held in a die-member having a die-opening of the exact outside dimensions which it is desired the finished ring shall have.

My invention has for its object the construction of a machine of this description having a die-member and a pair of roller dies, said dies being arranged upon corresponding ends of a'pair of positively driven shafts, so that the rings may be placed in and withdrawn from the die-member easily and quickly; the work, while being done, may be watched carefully; the construction of the machine, as a whole, may be very simple, and its component parts may be compactly arranged.

Figure l is a side elevation of a machine for rolling rings employing this invention.

Fig. 2 is a plan view of the same.

Fig. 3 is an end view of the same.

lTig. 4 is a transverse vertical section tal-:en on the dotted line Lit-t of Fig. l.

Fig. 5 is a sectional detail of the die member and a pair of roller dies arranged for engagement with the inside and the outside of a ring which is arranged in the dieopening of said member.

l and-2 represent a pair of parallel disposed shafts arranged one above the other and suitably supported. Both of these shafts are adapted to be positively driven. As here shown, the shaft 2 has a toothed gear 3 secured to it, which is engaged by a pinion 4, secured to a main drive-shaft 5, having a toothed gear 6 secured to it, which is adapted to be engaged and rotated by any suitable motor or driving-means.

to a shaft 9, bearing a toothed gear 10, which is engaged by a pinion l1, secured to the main drive-shaft 5. 'lihis form of driving-means causes rotation of the shafts l and 2 in opposite directions, and of the engaging points` of the roller dies arranged on said shafts in the same direction, and of one of said shafts being rotated at a higher speed than the other, the shaft l being here shown as driven at a higher speed than the shaft 2. In lieu of this form of driving-means, any other suitable form may be employed which is adapted to positively drive the two shafts l and 2 in opposite directions.

The shafts l and 2 have coperating roller-dies arranged thereon or fixed thereto, adapted to engage internally and eXternally, respectively, a cast ring` 20, which is to be rolled by them and polished.

Referring to Fig. 5 wherein these rollerdies are represented, the roller-d ie 15, on the shaft l, is formed with a pair of flanges adapted to provide a circumferential recess between them of a width corresponding to the width of the ring 20, tobe rolled, and the roller-die 16, on: the shaft 2, has a face of a width corresponding to the width of the ring 20, to be rolled, and this face is of a width corresponding to the width of the recess between the lianges of the roller-die 15, and of the width of the ring to be rolled, said ring being adapted to occupy a position in the recess in the roller-die l5, as shown.

A stationary die-member is provided having a die-opening in which the cast ring to be rolled is placed, and said die-opening is of a size and shape to correspond with the exact outside dimensions to be given to the finished ring. 'This die-member comprises a stationary part 25, and a movable vpart 26, said parts being pivotally connected together at the top which admits of the movable part being swung laterally away from the stationary part to facilitate the cast ring being placed in the die-opening and withdrawn therefrom.

As the cast ring is of circular formation there is a semi-circular die-opening provided in each part of the die-member, and each part is formed with a further opening at the bottom communicating with the dieopening, as at 27, which provides an entrance to the die-opening. Through this entrance 27, the ring may be passed when the movable part of the die-member is swungv laterally but a short distance. The movable or swinging` part of the die meinber has an ear 30 or other abutment against said roller-die 16.

which 'the inner end of a screw 31 is adapted to engage, the outer end of said screw having a hand wheel for'rotating it, and the threaded portion of said screw having itsjbearing in the frame, and said swinging part has an extension 35, which is adapted to engage a lug 36, on the frame, to limit its movement. By means of this screw, the movable or swinging part of the die-ineinloer is permitted to swing on its pivot, thereby to increase the width of the entrance.

One of the roller dies is movable toward and from the other, and, as here shown, the roller-die 16 is movable toward and from the roller-die 15, and hence its shaft 2 is supported in a bearing-box 17, set in a frame-member 1S, which is pivoted at 19,

which permits an up-and-down movement of Said frame-member 18 has a weight 18 attached to it, which serves as a counter-balance.

A pressure-device is provided for causingV the roller-die 16 to exert a substantial pressure on the ring. This pressure-device may be of the hydraulic or screw-jack type, and, as here shown, it comprises a short prop or stud 40, arranged in upright position on a piston 41, working-in a cylinder 42, to

Y which water or air under pressure will be delivered by a pipe 43, controlled and regulated by a valve 44, having a foot or hand lever, or other operative means connected withV it, by which it is moved. d

|The prop or stud 40 is arranged to engage the movable frame-member. Any desired degree of pressure may be supplied.

The cast ring having been placed in a die- 1 member with the roller-die 16 in its lowermost position and the movable part of the die-member open, said movable part is returned to normal and the shaft bearing the yroller-die 16 is raised, and the ring is enjgaged by the twI roller-dies, inside and outside, and is rolled,.the engaging-points of said roller-dies moving in the same general direction, and upon application of the pressure 'said ring will be reduced in thickness and expanded to tightly lit the die-opening, and during such rolling action will be rotatedin thedie-opening, and ,by the frictional engagement ofthe roller-dies with the ring and the engagement of the ring with the wall of the die opening, both the internal and external faces of the ring will be polished.

lt will be observed that the upper rollerdie occupies a position in the die-opening and engages the inside of the'ring, and the 'Y lower roller-die extends into the entrance of 'ing ends of a pair of positively driven shafts, the front of the die-member is exposed, so that the rings can be easily placed in position and withdrawn, and the work, while being done, can be carefully and continuously watched, and these essential advantages coupled with many minor advantages gained by my construction substantially improves the machine and furthermore enables the machine to be built cheaply, and its component parts to be coinpactly arranged, so that the machine, as a whole, will occupy but little space.

I claim:-

1. In a machine for rolling rings, the combination of a die-member having a -dieopening for the ring to be rolled with an entrance thereto, a pair of roller-dies arranged one above the other, one of the roller dies being arranged in the die-opening for engagement with the inside of the ring, and the other roller die being arranged below the die-member and projecting into the entrance of the die-opening for engagement with the outside of the ring, and a pair of parallel arranged shafts, both extended rearwardly from the die-member and supporting the roller-dies on their corresponding ends.

2. In a machine for rolling rings, the combination of a dic-member having a die-opening for the ring to be rolled with an entrance thereto, a pair of roller-dies arranged one above the other, one of the roller dies being arranged in the die-opening for engagement with the inside of the ring, and

- dies toward and 'from the other, and a pressure device arranged to exert an upward pressure on said frame.

3. In a machine for roll-ing rings, the combination of a die-member having a die-opening for the ring to be rolled with an entrance thereto, a pair of roller-dies arranged one above the other', one of the roller dies being arranged in the die-opening for engagement with the inside of the ring, and the other roller die being arranged below the dieniember and projecting into the entrance of the die-opening for engagement with the outside of the ring, a pair of parallel arranged shafts, both extended rearwardly from the die-member and supporting the roller-dies at their corresponding ends, a

movable frame supporting one of said shafts permitting movement of one of the rollerdies toward and from the other, counterbalancing means for said frame, and a pressuredevice arranged to exert an upward pressure on said frame.

4. In a machine for rolling rings, the combination of a die-member having a die-opening for the ring to be rolled with an entrance thereto, a pair of roller-dies arranged one above the other, one of the roller dies being arranged in the die-opening for engagement with the inside of the ring, and the other roller die being arranged below the die-member and projecting into the entrance of the die-opening'for engagement with the outside of the ring, a pair of parallel arranged shafts, both extended rearwardly from the die-member and supporting the rolleredies at their corresponding ends, a movable frame supporting one of said shafts permitting 20 movement of its rolleredie toward and from the other roller-die, a pressure-device arranged to exert an upward pressure on said frame and pedal-controlled means for said pressure-device.

'In testimony whereof, l have signed my name to this speciication, in the presence of two subscribing witnesses.

WALLACE WHITE.

Witnesses:

CHARLES A. CLIFFORD, JOHN J. DoNovE.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. C. 

